u/MissWeekend

When the helmet-kicking scene is shown, Dominic Monaghan is making a comment on how much he loved Viggo's reaction with the scream, and how he doesn't know if it was in the script that way or not. He doesn't mention the toes at all, it seems obvious he doesn't know about it, and neither does Billy Boyd (I think they were commenting together).

I know this incident only became legendary because of the internet and the fans, but I would have thought the other actors at least knew about it! Especially as the cast commentary was of course recorded after the movie was finished, so quite some time later, you would think Dominic had heard the story already?

On the other hand, Bernard Hill does mention Viggo's two broken toes during the warg attack scene, so he was aware of it.